Stiffness of tongue root may be the precursor of neurovascular lesion in the brain, or the precursor of tumor in the tongue root, as follows: 1. Vascular neuropathy in the brain: it may lead to stiffness of tongue root, and impediment of tongue movement due to inflexible tongue movement. 2. Tumor in the tongue root: it may lead to stiffness of tongue root, and the tongue root can not be moved, and certain impediment of respiration, feeding, and speech occurs. This kind of situation should go to the hospital in time, symptomatic treatment, identify the cause of the disease, it is recommended to go to the neurosurgery department first, to see whether there is a neurovascular lesion in the brain. If neurovascular lesions in the brain are ruled out, the patient should consult the stomatology department for examination to determine whether malignant tumors have occurred in the root of the tongue, and if malignant tumors are present, timely surgical treatment should be carried out.